Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
442346 (2011 SW208)
Classification: Main-belt Asteroid          SPK-ID: 2442346
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2378417114939053 1.5671e-07  
a 2.620996501473992 6.2649e-08 au
q 1.997614207743879 4.4497e-07 au
i 3.314991166108462 1.413e-05 deg
node 122.0702683416039 0.0001611 deg
peri 241.2371670952784 0.00016581 deg
M 25.33950901293191 4.2092e-05 deg
tp 2458891.407779012073
(2020-Feb-11.90777901)
0.00017809 TDB
period 1549.880052356606
4.24
5.557e-05
1.521e-07
d
yr
n .2322760393313128 8.3281e-09 deg/d
Q 3.244378795204104 7.755e-08 au
  Orbit Determination Parameters
   # obs. used (total)      75  
   data-arc span      3380 days (9.25 yr)  
   first obs. used      2007-11-18  
   last obs. used      2017-02-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45203  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:46:43  

Additional Information
 Earth MOID = .997746 au 
 Jupiter MOID = 2.21585 au 
 T_jup = 3.362 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457006.5 (2014-Dec-15.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2407437700666279 1.564e-07  
q 1.988920439961922 4.4516e-07 au
tp 2457341.055014551189
(2015-Nov-14.55501455)
0.00013265 TDB
node 122.2030138682559 0.00016148 deg
peri 241.0426456162779 0.00016596 deg
i 3.313862707428187 1.4131e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      75  
   data-arc span      3380 days (9.25 yr)  
   first obs. used      2007-11-18  
   last obs. used      2017-02-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45203  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:46:43  

Additional Information
 Jupiter MOID = 2.21585 au 
 T_jup = 3.362 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.44602275064618E-14 -6.941258243436036E-14 -1.589614413225008E-11 1.520344659818833E-13 -4.373053733838289E-12 -4.169483831882695E-14
q -6.941258243436036E-14 1.981686855044484E-13 4.572428791296117E-11 -4.172866980171428E-13 1.247480775108196E-11 1.218349680355691E-13
tp -1.589614413225008E-11 4.572428791296117E-11 1.759667475705612E-8 -1.626360133235841E-10 5.110415967673198E-9 2.403414175075547E-11
node 1.520344659818833E-13 -4.172866980171428E-13 -1.626360133235841E-10 2.60773408241214E-8 -2.608137168512473E-8 1.03790368587208E-9
peri -4.373053733838289E-12 1.247480775108196E-11 5.110415967673198E-9 -2.608137168512473E-8 2.754240800966084E-8 -1.030206444965656E-9
i -4.169483831882695E-14 1.218349680355691E-13 2.403414175075547E-11 1.03790368587208E-9 -1.030206444965656E-9 1.996930882798588E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.8   n/a MPO402745  

442346 (2011 SW208)          Discovered 2007-Nov-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 SW208 = 2007 XO30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-28 15:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin